Explain Portable External Hard Disk Parts and Its Type

Hard Disk

Hard Disk is actually a group of some disk, which stores your data electromagnetically in a round circular disk. It’s one part reads and writes the data. To store all the operation hard disk need it uses seek. Every hard disk drive unit has a rotation speed which may be 4500 to 7200 rpm. The working time is denoted in millisecond and its physical location looks like cylindrical. CLICK HERE TO KNOW Explain the Sound Card of Computer and Its Functions ... 

Explain Portable External Hard Disk Parts and Its Type

Types of Hard Disk :

·         IDE

·         SATA

·         SCSI

·         SAS

IDE ( Integrated Drive Electronics Drive ) :

The other name of IDE is DE ( Drive Electronics ) and PATA ( Parallel Advance Technology Attachment Drive ), they have almost 40 pins and works at 133 Mbps transfer rate. It can send 8 bit data at one time. PATA cables are used to connect PATA hard disk, it can connect 2 drives at a time, and from them one is called as owner and other servant.

SATA ( Serial Advance Technology Attachment Drive ) :

This drive has 7 pins, from them 4 works in pair and helps in sending and receiving of files. While other 3 pins stays at below. The transfer rate of SATA is almost 300 MB per second. It sends data as bit after bit. SATA cables are used to connect SATA hard disk but it can connect only one hard drive.

SCSI ( Small Computer System Interface Drive ):

It has 50 to 68 pins and it can send 640 MB data every second. It is used to connect SCSI hard disk and you can connect 16 hard drives with it.

SAS ( Serial Attached SCSI Drive ) :

SAS is capable of sending 805 MB data per second and we can connect maximum of 128 drives with it. CLICK HERE TO KNOW Floppy Disk Drive Functioning Uses and Explanations ... 

Profit and Losses of Hard Disk

External Hard Disk and Their Benefits :

Today we have lot of personal data, information and other documents and we don’t want to lose them. But you store these data in your computer, so you can’t carry those data with you. Some uses Pan Drives for this problem but as we know Pan Drives have small storage size. In this situation you can use external hard disk. The minimum size of external hard disk is 320 GB, which is enough to store or backup your data.

Benefits of External Hard Disk :

·         Transfer Data : Sometime we don’t have enough storage to store our data or we found hard to transfer data between two computers. In this situation hard disk is so helpful because it can transfer many data at one time.

·         Backup : Computer is a combination of both hardware and software, because it is a machine so its part may damage any time. That’s why we need to have backup for our data and portable or external hard disk is best for this work. To use external hard disk as your backup storage device you just need to store all your data in it.

·         Security : Backup of data works as a protection for you documents. Your document is now safe and you can use that any time.

·         Portability : Because hard disk has light weight and occupies less space, so it is easy to carry from one place to other, means they are portable. Like you use school bag to carry your book, similarly you can use portable hard disk to carry your data and information.

·         Cost : Because of competition in market, the rate of computer parts are continuously decreasing and that is the reason why external hard disks are also not expansive, that increases its demand as well.

Disadvantages of External Hard Disk :

With all such amazing benefits of external hard disk, there is one drawback as well that because it is light and small, that’s why anyone can steal it from you.

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Integrated Drive Electronics Drive

Hard Disk, HDD, Types of Hard Disk, Profit and Losses of Hard Disk, Integrated Drive Electronics Drive, Serial Advance Technology Attachment Drive, Serial Attached SCSI Drive, Small Computer System Interface Drive, IDE, SATA

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